Bobbin winding and thread treating apparatus



y 1949- ROSEMAN I 2,477,422

BOBBIN WINDING AND THREAD TREATING APPARATUS Filed Jan. 1'7, 1948 4SheetsSheet 1 July 26, 1949. ROSEMAN Q 2,477,422

BOBBIN WINDING AND THREAD TREATING APPARATUS Filed Jan. 17, 1948 A 4Sheets-Sheet 2 July 26, 1949. ROSEMAN 727471422 BOBBIN WINDING'ANDTHREAD TREATING APPARATUS Filed Jan. '17, 1948 4 Sheets-Sheet s July 26,1949. ROSEMAN 2,477,422

BOBBIN WINDING AND THREAD TREATING APPARATUS Filed Jan. 1?, 194a Y 4Sheets-Sheet 4 D J0 2 5 54 3 15 a 2055 Patented July 26,1949

BOBBIN WINDING AND THREAD TREATING APPARATUS Leo Boseman, Newark, N. J.

Application January 17, 1948, Serial No. 2,906

Claims. 1

- This invention relates in particular to apparatus for winding bobbinsfor use in sewing machines and for treating the bobbin thread at apredetermined point in its length, for example. to coat or impregnatethe thread with wax or any one of numerous substances, although theinvention may be utilized for treating threads or similar strands orcords for other purposes than us in sewing machines.

In my copending applications Serial No. 555,534, flied September 23,1944, and Serial No. 783,251,

filed October 31, 1947, I have described and claimed mechanismresponsive to changes in the character of the thread such as thickness,color, friction-producing properties, or changes in tension of thebobbin thread in a sewing machine to indicate the approaching exhaustionof the bobbin thread, and according to one form of the invention afriction-producing substance, such as soap or wax, is applied to thethread at a predetermined distance from the terminal end of the threadon the bobbin to cooperate with a part of the mechanism so as toincrease the thread tension and cause actuation of an indicator such asan electric signal. l

- A prime object of the present invention is to provide novel andimproved mechanism for wind- ,ing the bobbin thread and forautomatically treating the thread, for example, by application of a wax,at one or more predetermined points in the length of the thread duringthe winding operation.

For winding thread on a sewing machine bobbin, there is frequently usedadevice that comprises a shaft on one end of which the bobbin isdetachably mounted and on, the other end of which is a pulley that canbe moved selectively into and out of contact with the driving belt of asewing machine for rotating and stopping rotation of the bobbin,respectively, said device also includin means for positively holding thepulley in contact with the driving belt until the desired amount ofthread has been wound on the bobbin. In beginning the winding operation,generally the operator manually winds a few turns of thread on thebobbin before starting the winding device, the thread being undertension between the bobbin and the source of supply.

Therefore, another object of my invention is to provide novel andimproved meansfor coating or impregnating a portion of the length of thethread at a predetermined distance in advance of the bobbin oncompletion of winding of the previous bobbin or during this manualwinding operation, and for stopping said treatment of the threadautomatically upon starting of operation of the winding mechanism,whereby only a small amount of the thread will be treated at apredetermined distance from the terminal end of the thread on thebobbin.

A further object is to provide a novel and improved device for applyinga friction-producing substance to the thread, whereby the thread may betreated by simply pulling it through the friction-producing substance,and said substance shall be automatically presented for treating thethread at the proper time. l

Other objects of the invention are to provide in such mechanism, noveland improved. means for varying the amount of thread between theterminal end thereof and the zone of treatment; and to obtain otheradvantages and results that will be brought out by the followingdescription in conjunction with the accompanying drawings, in whichFigure 1 is a perspective view of bobbin winding and thread treatingmechanism embodying my invention, showing the position of the partsduring the automatic winding operation;

Figure 2 is a front elevational view of the mechanism, showing the partsin the thread treating position and prior to the automatic windingoperation, illustrating the holders for the thread treating substance intransverse section with portions broken away;

Figure 3 is a fragmentary rear elevational view of the bobbin windingspindle and driving pulley in the positions shown in Figure 2;

Figure 4 is a similar view, illustrating the parts in the positionsshown in Figure 1;

Figure 5 is an enlarged side elevational view of the holder forthethread treating substance;

Figure 6 is a vertical longitudinal sectional view through said holder;

Figure '7 is a transverse vertical sectional view, approximately on theplane of the line 'l-'! of Figure 6;

Figure 8 is a top plan view of a modified form of the invention;

Figure 9 is a front elevational view of the mechanism shown in Figur 8,with the parts in thread treating position and prior to the automaticwinding operation;

Figure 10 is an enlarged fragmentary vertical sectional view,approximatzely on the plane of the line Ill-ill of Figure 8; 4/

Figure 11 is a similar view, showing the thread moved out of contactwith the thread treating substance during the bobbin winding operation;

Figure 12 is an enlarged transverse vertical sec- 7 tional view,approximately on the plane of the line line.l5-=l5 of Figure 13;

Figure 16 is a similar view, showing the position of the parts duringthe bobbin winding operation, and

Figure 17 is a fragmentary ransverse vertical sectional view,approximately n the plane of the line l1-|1 of Figure 14.

For the purpose of illustrating the principles of the invention, I haveshown it as embodied in a generally known type of bobbin winder whichincludes a base plate I that is secured to a table or bench 2 onwhich ismounted a sewing machine that has the usual drive shaft carrying apulley (not shown) which is driven by a belt 3 from a power driven maindrive shaft. A bobbin spindle l is journaled in one end of a bearingmember 5, the other end of which is pivotally connected at 6 to the baseplate I, one end of the spindle having a portion 1 on which the bobbin 8to be wound may be separably mounted. The other end of the spindle has apulley 9 to engage one reach of the drive belt 3 for rotating thespindle. For moving the drive pulley into and out of engagement with thedrive belt, the bearing member 5 has a. lateral arm l which is pivotallyconnected at H to one end of a link l2, the other end of which ispivotally connected 1 at ii to one end of a second link ll, the otherend of which is pivotally connected at IE to the base plate. The linksand arm III are so related that when they are in substantiallongitudinal aiinement with each other the pulley 9 is forced intofrictional contact with the drive belt. For holding the drive pulley inthis position, the end of the link ll has a lateral lug ii to overlieand abut the link l2 when the pivotal connection l3 between the links I2 and II passes dead center or moves to one side of the common imaginaryline passing through both the pivots II and 15, as best shown in Figure4.

To disengage the pulley from the drive belt, the link it is swungupwardly to move the pivot ii to the other side of said imaginary linebetween the pivots l and II, as shown in Figure 3, and for holdingtheparts in this position with the pulley disengaged from the drivebelt, a pusher H is mounted in the bearing member 5 to engage the baseplate I and is normally actuated against the base plate by a spring It.

The thread 20 to be wound on the bobbin 8' may be drawn from anysuitable source, such as a large spool, and is passed through a suitabletension device 2|, a guide 22, and around a pulley 23 which is journaledon a vertical standard 24 which is secured to the base plate I. From thepulley 23 the thread passes upwardly and around a pulley 25 that isjournaled on a bearing block 26 that is vertically adjustable on thestandard I of the holder to guide the thread As shown, one of these lips24 and is held in adjusted position by a set screw 21. From the pulley25 the end of the thread is P ssed to the bobbin 8.

The parts are shown in Figure 2 in their normal or at rest positionsbefore starting the winding of the bobbin by the pulley 9. In startingthe winding operation, the bobbin is first placed on the spindle, afterwhich the free end portion of the thread is manually wound several timesaround the bobbin, and then the lever i2 is actuated to force the pulley9 into contact with studs 4| mounted in the in accordance with myinvention is effected. For the purpose, a holder A for the threadtreating substance is mounted on a bracket arm 22 which is in turnsecured to the bearing member I and extends therefrom toward the threadsupply, said holder A being located by the bracket 22 while the windingmechanism is at rest so that the thread passing from the guide 22 to thepulley 23 is drawn over or through the thread treating substance in theholder. Thus. when, the thread is manually wound on the bobbin, 9.portion thereof at a predetermined distance from the wound end of thethread is treated, i. e., coated or impregnated with the substance inthe holder A. Then, when the pulley 9 is pushed into contact with thedrive belt I to start the power winding operation, the holder A isactuated by the bracket 28 so as to move the thread treating substanceout of contact with the thread, as shown in Figure 1.

Any suitable thread treating substance may be utilized, but I have showna block of wax 22, for example, beeswax, which may be mounted in anysuitable type of holder. As shown, the holder includes a yoke 30 whichis secured to the bracket 28 by screws 3| and has a laterally projectingarm 32 disposed beneath the of the thread from the guide 22 to thepulley 22. On this arm 32 is a box-like container 33 in which the waxblock 29 is slidably mounted and pressed against an abutment block 34 bya spring ll which as the holder is swung upwardly into the positionshown in Figure 2. Guide lips 3| are provided at opposite sides of theslots I! on the top wall is carried by a cover 40 which is removablyattached to the container 33 to facilitate insertion of the wax blockinto the container, the cover being held in position by side walls ofthe container 33, which are received in slots 42 in the edge of thecover ll. Preferably, a follower block 44 is interposed between thespring and the wax block. 1

In operation. as the thread is pulled across the wax block, some of thewax is picked up by the thread so as to form a slight groove in the topof the block, but this groove is closed within a short time by thepressure exerted on the wax block between the abutment block 34 and thespring 35.

It will be observed that the amount of thread between the end thereof onthe bobbin and the zone of application of the thread treating substancemay be varied by adjusting the pulley 2| on the vertical standard, theamounts of thread being increased and decreased by respectively raisingand lowering the pulley on the standard.

In some instances it may be desirable to treat the thread at severalpoints, and accordingly. if

- desired, a second holder B for the thread treating substance may bemounted on the bracket the drive belt 3, whereupon the winding of thebobbincontinues under power.

It is during the manual winding of the thread on the bobbin that thetreatment of the thread arm 28 to apply the thread treating substance tothe thread at a point'closer to the terminal end of the thread, theholder being mounted so that it will engage and disengage the threadsimul-- taneously with the engagement and disengagement of the thread bythe holder A. The holder B may be of any suitable construction, forexnormal path of travel into the slots.

ample, like the holder A, although it is only schematically shown asincluding a suitable container 33a for thethread treating substance 25a.

The manual winding of the thread is generally made in a directionreverse to that of the power winding, and sometimes when the thread hasbeen unwound during a sewing operation to the manually wound portion,the thread breaks; and it will be seen that the second holder B might beso located as to indicate the approach of the manually wound portion ofthe thread. I

Instead of applying the wax or a similar thread treating substance tothe thread, the device A might be modified to attach to the thread abead or other medium for increasing the thickness of the thread. a

In Figures 8-12, inclusive, I have shown a modification oi the inventionwherein the thread is moved into'and-out of contact with the threadtreating substance instead of said substance being moved into and out ofcontact with the thread, as shown in Figures 1-7, inclusive. In thisform of the invention, the structure is in general the same as thatshown inFigures 1-7, inclusive, the main differences being that theholder C for the thread treating substance has its supporting arm 45,whichcorresponds to the arm 32 secured to the base plate I, as indicatedat 46, so that the container 33 for the thread treating substance isdisposed above the thread 20 between the guide pulley 28 and the guide22 with the thread receiving slot 31 opening downwardly as shown inFigures and 11, instead of upwardly as shown in Figure 5. The bracket 41which corresponds to the bracket 28 has two lateral thread guiding arms48 that have alined thread guiding openings 49 so that as the ,bracket41 is swung upwardly and downwardly the portion of the thread. betweenthe guides 49 will be moved into and out of the slots 31 of thecontainer for the thread,

treating substance.

When the drive pulley 9 of the automatic winding apparatus is thrown outof engagement with the driving belt, as shown in Figure 9, the bracket4'! simultaneously will elevate the thread into contact with the threadtreating substance, as shown in Figure 10, but immediately upon thebeginning of the automatic winding operation,

that is, when the drive pulley is thrown into contact with the belt, thebracket 41 will .move the thread out of contact with the thread treatingsubstance, as shovm, in Figure 11.

52 at opposite sides of the portion of the thread 20 between the guidepulley 23 and the guide 22, as shown in Figures 15 and 16.

These pivotally connected ends of the sections and 5| open toward eachother and have extending therethrough blocks 54 and 55 both of I whichmay be a thread treatin substance such as wax. although as shown, theblock 54 is of wood while the block 55 is of wax. Either or both ofthese blocks may be slidable so that their juxtaposed surfaces will beforced into contact with each other when the ends of the sections aremoved toward each other, but as shown, only the block 55 is slidablymounted and it has a backing plate 56 between which and'a pusher plate51 is interposed a light compression spring 58. The pusher plate 51 iscarried by a screw rod 59 one end of which is slidable in an extension60 on the section 51 and hasan adju table-nut t ifor limiting...

movement of the pusher plate away from the block 55.

For swinging the sections 50 and 5i about a pivot 52, a rocker 62 foreach section is pivotally connected at 53 on a bracket arm 64 one end ofwhich is pivotally connected at 65 to the bearing member 5 for thebobbin winding shaft. Each rocker 62 is pivotally connected at 66 to thecorresponding section 50 or 5|. With this construction, when the bearingmember 5 is located to hold the driving pulley 3 out of contact with thebelt 3, as shown in Figures 13 and 14, the bracket arms 64 will tilt therockers 52 so as to swing the sections 50 and 5! toward each other asshown in Figure 15. At least the rocker .62 corresponding to the section51 has a lug 81 to engage an adjustable nut or collar 58 on the screw 59when the bracket arms 64 are moved to swing the casing sections 50 and51 together and thereby exert with the block 5|, as shown in Figure 15.Preferably, swinging of the sections and 5| in both is at rest, andunder certain conditions or with I certain thread treating substances,the thread might become embedded in the thread treating substance insuch a manner that the thread would be broken upon pulling of the threador upon movement of the holder for the thread treating substance in thedirection to move the latter out of contact with the thread. The form ofthe invention shown in Figures 13-17, inclusive, pridirections ispositively limited, as by engagement of the lugs 61 with the ends of thecasing sections and by engagement of abutment shoulders 6! on therockers 52 with the bottomwalls of the sections 50 and 5i.

In operation, when the bobbin winding apparatus is a rest, the portionof the thread between the pulley 23 and the guide 22 is gripped betweenthe blocks 54 and 55, as shown in Figure 15, so that when the thread ispulled as in winding the thread on the bobbin, some of the threadtreating substance will be applied to the thread. However, upon startingof the automatic bobbin winding operation, when the drive pulley isthrown into engagement with the belt 3, the bracket arms 84 are actuatedto swing the blocks 54 and 55 away from each other and out of contactwith the thread, as best shown in Figure 16. At this time, also, thepressure on the block 55 from the presser plate 51 is released bydisengagement of the lug 51 from the adjustable collar 55. Accordingly,there is no danger of the thread being broken upon disengagement of itfrom the thread treating substance because the blocks 55 and 55 of thethread treating mechanism are posthread, said means It will beunderstood that while I have shown and described several now preferredembodiments of my invention, the details of construction 01' themechanism can be widely modified and changed and the invention may beapplied to other types of apparatus, within the spirit and scope of theinvention. For example, the invention could be used with apparatuswherein the starting and stopping of the winding of the thread on thebobbin is controlled in any suitable manner, such as where the bobbinspindle is drivendirectly from an electric motor shaft which is startedand stopped to start and stop the winding operation. respectively. Also,instead of applying a wax to the thread, the devices A or D might be,modiiled to attach a bead or other medium for increasing the thicknessof the thread.

' 8 with the thread so that the thread is drawn over the block duringthe manual winding of the thread. g

'1. In combination, a base, a spindle for a bobbin, 9. bearing memberfor said spindle pivotally mounted on said base so that thread from asource can be wound on a bobbin mounted on said spindle, power-drivenmeans for rotating said spindle, means actuating said bearing member tomove said spindle into and out of engagement with said power-drivenmeans. and a thread 'treating device connected to said bearing mem-Having thus described the invention, what I spindle when said windingisstopped and started respectively.

2. In combination, a spindle for supporting a bobbin so that thread maybe drawn from a source of supply and woundon a bobbin mounted on saidspindle, means for starting and stopping winding of said thread on saidbobbin, a holder for a thread treating substance, and means foractuating said holder to move said thread treating substance into andout of contact with a portion of said thread between said source and abobbin on said'spindle in timed relation with the tively.

3. In combination, a spindle for supporting a bobbin so that thread maybe drawn from a source of supply and wound on a bobbin mounted on saidspindle; power-driven means for rotating said spindle, means mountingsaid spindle so that it is normally out of engagement with saidpowerdriven means and thread may be manually wound on a bobbin mountedon the spindle, a thread treating device normally positioned in contactwith aportion of the thread between said source and said bobbin duringthe manual winding of said thread, and means for moving said threadtreating device out. of contact with said thread and for simultaneouslymoving said spindle into operative engagement with said power-drivenmeans to wind said bobbin. I

4.'In a combination as defined in claim 1, with the addition of meansfor varying the amount of the thread between said bobbin and the zone ofcontact of said thread treating means with the thread.

5. In a combination as defined in claim 1, with the addition of meansfor varying the amount oi the thread between said bobbin and the zoneof, contact of said thread treating means with the comprising aplurality of pulleys over which the thread is run, at least one oi whichis bodily movable.

.6, In a combination as-deflned in claim 3, the thread treating devicecomprising a container having a block of thread treating substancestopping and starting of said winding, respectherein, said block beingpressed into contact her so as to be moved into and out of contact witha portion of said thread between said source and said bobbinsimultaneously with movement of said spindle respectively out of'andinto engagement with said power-driven means.

8 In combination, a spindle for supporting a bobbin so that thread maybe drawn from a source or supply and wound on a bobbin mounted on saidspindle, means for connecting and disconnectingsaid spindle to and froma source of power for winding and stopping Winding of said thread onsaid bobbin respectively, and means for treating said thread and movableinto and out of contact with a portion of said thread between saidsource anda bobbin on said spindle when said winding is stopped andstarted respectively.

9. In combination, a spindle for supporting a bobbin so that thread maybe drawn froma source or supply and wound on a bobbin mounted on saidspindle, means for connecting and disconnecting said spindle to and froma source 01' power for winding and stopping winding of said thread onsaid bobbin respectively. a holder for a thread treating substance, andmeans for moving a portion of said thread and a bobbin on said spindleinto and out of contact with said thread treating substance in saidholder .simultaneously with the stopping and starting 01' said winding.

10. In combination, a spindle for supporting a bobbin so thatthread mabe drawn from a source of supply and wound on a bobbin mounted on saidspindle, means for connecting and disconnecting said spindle to and froma source oi power for winding and stopping winding of said thread onsaid bobbin respectively, a holder for a thread treating substance, aguide for a portion of thread between said source and a bobbin on saidspindle, and means for actuating said guide to move said portion ofthread out of and into contact with a thread treating substance in saidholder simultaneously with the connection and disconnection of saidspindle to and from said source of power respectively.

annual-mess crran The following referenc es are of record in the file ofthis patent:

tmrmn s'ra'ms Pa'mirrs France Feb. 6, 1939 between said source

